Men · 10 products

Men's Thermal Leggings & Merino Long Johns

All long johns165 Lightweight200 Light-Mid250 Midweight320 Heavyweight
Men's Thermal Leggings & Merino Long Johns
10 products
Bundle & save 10%Build your own base layer setPick a weight, a top and a bottom. Mix colours freely.Start building

About this collection

RelatedWomen's Base LayersMerino Socks

Men's merino wool long johns

Warm legs make the difference between enjoying a winter day out and counting the minutes until you get home. Our men's merino long johns, also known as thermal leggings or base layer bottoms, sit comfortably under jeans, work trousers, salopettes and waterproof over-trousers. Superfine Australian merino keeps you warm, wicks sweat and stays fresh.

Choose your weight

165gsm lightweight for mild days and running, 200gsm for cool UK weather and layering under trousers, 250gsm midweight for skiing and winter walking, and 320gsm heavyweight for fishing, stalking and deep cold.

Match them with a merino base layer top or save with a thermal set. Free UK delivery over £49 and 30-day returns.

FAQ

Men's Thermal Leggings & Merino Long Johns FAQ

Can I wear merino long johns under jeans?

Yes. The fabric is thin for the warmth it gives and the flatlock seams lie flat, so they sit comfortably under jeans and work trousers without bulk.

Which weight of long johns is best for skiing?

250gsm midweight suits most skiers. Choose 320gsm for very cold resorts or if you feel the cold, and 165–200gsm for spring skiing.

How should merino long johns fit?

Snug from waist to ankle so they wick properly and do not bunch. They are true to size; check waist and inside leg in the size guide.

NEWSLETTER

Get 20% off your first order

Subscribe to the Merino.tech newsletter — new drops, promo codes and layering guides. No spam, unsubscribe anytime.